%0 Journal Article
%T Centralized Quasi-Static Channel Assignment for Multi-Radio Multi-Channel Wireless Mesh Networks
%A Juan REN
%A Zhengding QIU
%J Wireless Sensor Network
%P 104-111
%@ 1945-3086
%D 2009
%I Scientific Research Publishing
%R 10.4236/wsn.2009.12016
%X Employing multiple channels in wireless multihop networks is regarded as an effective approach to increas-ing network capacity. This paper presents a centralized quasi-static channel assignment for multi-radio multi-channel Wireless Mesh Networks (WMNs). The proposed channel assignment can efficiently utilize multiple channels with only 2 radios equipped on each mesh router.  In the scheme, the network end-to-end traffics are first modeled by probing data at wireless access points, and then the traffic load between each pair of neighboring routers is further estimated using an interference-aware estimation algorithm. Having knowledge of the expected link load, the scheme assigns channels to each radio with the objective of mini-mizing network interference, which as a result greatly improves network capacity. The performance evalua-tion shows that the proposed scheme is highly responsive to varying traffic conditions, and the network per-formance under the channel assignment significantly outperforms the single-radio IEEE 802.11 network as well as the 2-radio WMN with static 2 channels.
%K Wireless Mesh Networks
%K Multihop Network
%K Channel Assignment
%K Multi-Radio
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=525